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MetaHate: A Meta-Model for Hate Speech Detection

2021· article· en· W4205675155 on OpenAlex
Daniel G. Kyrollos, James R. Green

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venue2021 IEEE International Conference on Big Data (Big Data) · 2021
Typearticle
Languageen
FieldComputer Science
TopicHate Speech and Cyberbullying Detection
Canadian institutionsCarleton University
Fundersnot available
KeywordsBenchmark (surveying)Computer scienceBaseline (sea)Task (project management)Language modelF1 scoreArtificial intelligenceMacroVoice activity detectionMachine learningSentiment analysisNatural language processingSpeech recognitionSpeech processing

Abstract

fetched live from OpenAlex

We present MetaHate, a NLP meta-model for detecting hatefulness in tweets by combining predictors for hate, emotion, sentiment, and offensiveness. We evaluate this model with the TweetEval benchmark for hate speech detection. MetaHate improves the baseline TweetEval RoBERTa based model on the TweetEval benchmark. Optimizing the decision threshold for the macro-averaged F1-score, MetaHate achieves a F1-score of 0.70, while the TweetEval RoBERTa-Twitter Retrained Hate model achieves a F1-score of 0.63. This improvement on one of the most difficult tasks on the TweetEval benchmark was achieved with no additional training data and negligible computational time and cost. MetaHate demonstrates the utility of leveraging predictions from language models trained for various tasks to improve performance on a single task.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Scholarly communication
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.942
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.002
Open science0.0050.002
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.448
GPT teacher head0.365
Teacher spread0.083 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it